For lifters, powerlifters and calisthenics athletes
Add a little every week. Watch it add up.
Log your sets in seconds, follow your coach's program and see your strength, your weekly volume per muscle and your bodyweight move, with the method behind every number.
Free to sign up. Runs in the browser of any phone, and installs on the home screen.
For athletes
Built for the gym floor
Everything you need between two sets, nothing you have to fill in for the sake of it.
Log as you lift
Tick off each set as you go, with a rest timer that calls the time out loud. No signal in the gym? Your sets stay on the phone and sync when you are back online.
Percentages become kilograms
A set written as 80% turns into the load to use, worked out from your tested or estimated max and rounded down to your plates, with the reps you have in reserve.
Weekly sets per muscle
Hard sets for 16 muscle groups against a weekly target, counting the muscles an exercise trains indirectly at half, as the research does.
Strength you can see
The estimated max of every exercise over time, one strength index across all of them, and the odd session flagged instead of bending the trend.
Bodyweight included
Weigh-ins with a moving trend, counted in the load of pull-ups, dips and every other bodyweight exercise.
Film your sets
Record a set from the workout screen and keep the clip next to it, to check your technique later.
For coaches
Coach athletes, not spreadsheets
Write a block the way you would on a spreadsheet, and let each athlete get their own loads.
Plan the block week by week
Move an exercise on by a rule: more sets, reps or percentage each week or each session, up to a limit, with a deload every few weeks. Write any week by hand and the rule carries on around it.
One program, every athlete's loads
Prescribe percentages once. Each athlete gets the kilograms from their own max when the workout starts.
Notes where they matter
Leave a note on a workout or on a single exercise, and see when your athlete has read it.
Invite with a link
Share an invitation link: your athlete signs up and their training shows up in your dashboard.
Method
Numbers you can check
Every card in the app has a page that explains how it is calculated, with the studies behind it. Where a value is a choice of the app rather than a finding of the research, it says so.
Estimated max
Epley's formula on every set, with the reps capped at 10 by default, where linear formulas stay accurate.
Epley 1985 · Reynolds 2006
Hard sets
A set counts as hard when its estimated max comes close to your recent best: closeness to failure, without asking you to rate it.
Refalo 2023 · Baz-Valle 2022
Sets per muscle
Full credit for the muscles an exercise trains directly, half for the ones it trains indirectly: the count that fits the dose-response data best.
Pelland 2026
Outliers
A Hampel filter spots the session that does not fit and leaves it out of the summaries.
Pearson 2016
Exercise library
See the movement before you do it
Exercises come with an illustration of where they start and where they end, the muscles they train and the equipment they need. Missing one? Add your own.
Back squat
Bench press
Deadlift
Overhead press
Pull-up
Dip
Hanging L-sit
Pike push-up on parallettes